227671domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that remain prime through 4 iterations of function f(x) = 3x + 8.at n=13A023309Expansion of sum ( q^n / product( 1-q^k, k=1..5*n), n=0..inf ).at n=43A035297Smallest of five consecutive primes whose sum is a square.at n=22A206281Prime numbersat n=20242